Exercise device



FIG. 1 is a top plan view of an exercise device showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation view; the rear elevation view being a mirrorimage thereof;

FIG. 4 is a left side elevation view, the right side elevation viewbeing a mirror image thereof; and,

FIG. 5 is a front, top left side perspective view thereof.

CLAIM The ornamental design for an exercise device, as shown anddescribed.